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South DakotaDepartment of Transportation

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Of Interest

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Interstate 29 and 85th Street Interchange in Sioux Falls

Project Home Contacts Public Involvement

March 19, 2026 - Interstate 29 and 85th Street Interchange in Sioux Falls - Public Information Meeting

South Dakota Department of Transportation
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501

605-773-3265 (voice) 605-773-6214 (fax) Contact Us

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Region and Area Offices Aberdeen Mitchell Pierre Rapid City Maintenance Unit Map (Region/Area)

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South Dakota Department of Transportation
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501

605-773-3265 (voice) 605-773-6214 (fax) Contact Us

Interstate 29 and 85th Street Interchange in Sioux Falls

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© 2026 State of South Dakota. All Rights Reserved.